Improvement in the manufacture of paper boards



E. A. SEELEY.

Improvement in the Manufacture of Paper-Boards.

No. 114,868. Pate'nt edMay 16,1871.

:7 AM PMm-umosnAPH/c can. lassonuss FRUCESSJ moisture.

UNITED STATES PATENT OFFICE.

EDMUND A. SEELEY, OF SCOTCH PLAINS, NEW JERSEY.

IMPROVEMENT IN THE MANUFACTURE OF PAPER BOARDS.

Specification forming part of Letters Patent No. 114,868, dated May 16,1871.

I, EDMUND A. SEELEY, of Scotch Plains, Union county, State of NewJersey, have made an Improvement or Discovery, new and useful, inManufacturing Paper Boards, of which the following is a specification:

My discovery or improvement relates to a means of rendering the powerand speed of hydraulic and other presses more available than heretoforein the process of drying paper boards.

The boards are of varied thickness, to suit various purposes. lVhentaken from the machine on which they are made they are full of Thespeedy expulsion of the moisture without injury to the boards by greatpressure and in a short time is an object not hitherto satisfactorilyattained.

Heavy pressure quickly applied to a pile of wet boards defac'es andtears them more or less. The introduction of wood lay-boards atintervals in the pile decreases the wear and tear; but when put soneartogether as to fill the press with more wood than paper boards there isno certainty but that more or less of the boards will be injured. WVoodboards thin enough to save room will not stand the required pressure.

The great object is to prevent lateral movement of the stock or materialof the boards under the pressure.

These difficulties I overcome by the use of metal lay-boards, coveredwith any suitable cloth or other material. The affinity of the coveringfor the paper stock, keeping it perfectly quiescent under the pressure,all lateral movement is avoided, and the less space occupied with themetal, that has the required stiffness without the thickness of thewood, allows of so few boards of paper between the metal lay-boards asto prevent any defacing or splitting of the boards, and more of the roomin the press is then occupied with paper boards.

The accompanying drawing is for showing the positions of the metallay-boards, the paper boards, and of a guide-board in the middle of thepile, placed there to keep the pile upright while under the pressingprocess.

a shows the metal lay-boards; b, the paper boards; and c, theguide-board, which is kept in position by the upright bars, d, of thepress.

What I claim, and desire to secure, is-

1. The metal lay-boards, as and for the purpose specified and shown;

2. The metal lay-boards, covered with cloth. or other suitable material,as and for the purpose set forth.

3. The guide-board c, in combination with the metal lay-boards, as andfor the purpose specified.

E. A. SEELEY. Witnesses:

W. M. GOODING, EDWARD OoLLVER.

